Gas-tester.



A. L- SMYLY.

" GAS TESTER.

APPLICATION FILED SEPT. 18, 1913.

1,146,531. Patented July 13, 1915;

an snares earner oration ARTHUR L. SMYLY, OF CHICAGO, ILLINOIS.

GAS-TESTER.

To all whom it may concern:

Be it known that I, ARTHUR L. SMYLY, a

citizen of the United States of America, and

The .said paper is visible through the wall of the chamber, the latter being of glass. After, the paper has become discolored, it is then removed and inspected.

The object of my invention is to provide a gas tester in which the construction is such that the paper can be removed without disturbing either the inlet or the outlet gas connection. e

It is also an object to provide a novel construction and arrangement whereby'the glass or other transparent member is less liable to be broken, and is less expensive than heretofore, .being in the form, for example, of a simple ring or cylinder, straight and open at both ends thereof.

To these and other useful ends, my invention consists in matters hereinafter set forth and claimed.

In the accompanying drawings :Figure 1 is a vertical section of a gas tester embodying the principles of my invention. Fig. 2 is a cross section in line 2-2 in Fig. 1.

As thus illustrated, my invention comprisesfa cylindrical upright body A having "of glass (6 being disposed upright with its lower end resting on said gasket. The glass ring or cylinder, which is straight and open at top and bottom, reaches nearly to the upper edge of the casing. A gasket (4 rests on the upper end of said glass member a; a top or cover a is screwed upon the upper end of the casing, bearing against the gasket a, and thus compressing both gaskets to make the inclosure gas tight. Also, these gaskets prevent breakage of the glass member. The gas inlet connection B enters the side of the portion a and the gas outlet connection (1 leads away from the top a whereby the gas Specification of Letters Patent.

paper, and

Patented July 13, 1915.

Application filed September 18, 1913. Serial N 0. 780,495. i

l I enters the side of the lower part of the tester and leaves at the upper end thereof. The outlet connection C may terminate in a burner D, for affording light and for permitting the escape of the gas, if such is desired. The inlet B may have a valve 6 to control the flow of'gas. Also, as shown, the outlet connection (1 may have a lateral extension 0 leading to any desired point, and provided with a valve 0 of any suitable character. The extension 0 can be used for allowing the gas to escape from the tester, and serve also as an upper supporting arm. The gas connection C is, therefore, preferably in the form of a T-coupling, but may be of any suitable form or character, the purpose being to provide some sort of outlet connection for the top of the body and for the escape of the gas from the latter. However, the gas tip D will. serve as outlet for the gas and will maintain a sufficient flow for the operation of the device when the valve 0 is closed.

An upright post E is fixed on the closure n and extends upward into the glass member a, centrally thereof. The testing device, or indicating device, of any suitable character, is held on the top of this post. As shown, the said device consists of a disk of prepared paper F, of well known form, removably atlixed to the post, disposed in a horizontal plane; lVhen the paper F becomes discolored by contact with the gas, which condition can be ascertained by looking through the openings a, the closure a is unscrewed and the paper removed. It will be seen that this is done without disturbing the connections B and C, and without disturbing the glass member a, the connections and structure remaining intact except for the ren'loval of the said closure, post and diskof paper. Moreover, it will be seen that the casing A protects the glass, and makes it possible to use a glass member in an inexpensive form, which can be readily renewed when broken. But the casing, as

stated, makes the tester ln'actically safe Without disturbing said body or either gas connection.

2; A gas tester comprising a body -forming aninclosure, gas inlet and outlet connections therefor, a device for indicating the character of the gas, disposed inside of said body, and means for removing said device without disturbing either gas connection, said means lncluding a post for sa d device, and a removable support for said post, forming a closure for said body.

3. A gas tester comprising a body forming an inclosure, gas inlet and outlet connections therefor, leading externally thereto and therefrom, at the lower and upper ends thereof, a device for indicating the character of the gas, disposed inside of said body and means for removing said device Without disturbing said body or'either gas connection, said body having a transparent wall for viewing said device.

4. A gas tester comprising a body forming an inclosure, gas inlet and outlet connections therefor, a device for indicating the character of the gas, disposed 1ns1de of said body, and means for removing said device without disturbing either gas connecparent member open at opposite ends there-' of, a casing inclosing said member, provided with means bearing against the ends of said member to make the same gas tight, and having an opening for exposing a portion of the side of said'member, inlet and outlet connectionsifor the lower and upper ends Copies of this patent may be obtained for of, a .casing inclosing said member, pro-'- vided with means bearing against the ends of said member to make the same gas tight,

and having an opening for exposing a portlon of the side of said member, lnlet and outlet connections for the lower and upper ends of said casing, for passing the gas through said member, and a device within thesaid member, visible through said opening, for indicating the character of the gas, said casing having means for removing said device without disturbing said member or either connection.

7. A gas tester comprising a hollow transparent member open at opposite ends there-' of, a casing inclosing said member, provided with means'bearing against the ends of said member to make the same gas tight, and having an opening for exposing a portion of the side of said member, inlet and outlet connections for the lower ends of said casing, for passing the gas through said member, and a device within the said member, visible through said opening, for indicating the character of the gas, said casing having a closure at the lower end thereof,,removable without disturbing said memberxor either connection, and a post on said closure, provided with means for holding said device.

Signed by me ,at Chicago, Illinois, this 6th day of September, 1913.

ARTHUR L. SMYLY.

five cents each, by addressing the "Commissioner of Patents, Washington, D. C. 1

Correction in Letters Patent N0. 1,146,53L

It is hereby certified that in Letters Pa tent No. 1,146,531, granted July 13, 1915, upon the application of Arthur L. Smyly, of Chicago, Illinois, for en improvement in Gas-Testers, an error appears in the drawings requiring correction as foliows: For Fig. 1 as shown in the patent see Fig. 1 as here shown:

and that the said Letters Petentshould be read with this correction therein that the same may conform to the record of the case inthe Petent Oflice;

Signed and sealedthis 24th day of Aegust, A. D., 1915.

[SEAL] T. NEWTUN,

Acting Uofltrniss'ioner of Patents. 

